java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label56_true-unreach-call.c


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This is Ultimate 0.1.23-df4b876
[2018-11-06 20:19:25,168 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-11-06 20:19:25,172 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-11-06 20:19:25,188 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-11-06 20:19:25,188 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-11-06 20:19:25,190 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-11-06 20:19:25,192 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2018-11-06 20:19:25,207 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
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[2018-11-06 20:19:25,208 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-11-06 20:19:25,211 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-11-06 20:19:25,212 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-11-06 20:19:25,213 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-11-06 20:19:25,214 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-11-06 20:19:25,219 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-11-06 20:19:25,222 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
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[2018-11-06 20:19:25,227 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-11-06 20:19:25,228 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-11-06 20:19:25,231 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2018-11-06 20:19:25,232 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-11-06 20:19:25,233 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-11-06 20:19:25,234 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2018-11-06 20:19:25,240 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-11-06 20:19:25,243 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2018-11-06 20:19:25,266 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-11-06 20:19:25,266 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-11-06 20:19:25,267 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-11-06 20:19:25,267 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-11-06 20:19:25,272 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-11-06 20:19:25,272 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-11-06 20:19:25,272 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-11-06 20:19:25,273 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-11-06 20:19:25,273 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-11-06 20:19:25,273 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-11-06 20:19:25,273 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-11-06 20:19:25,273 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-11-06 20:19:25,276 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-11-06 20:19:25,276 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-11-06 20:19:25,276 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-11-06 20:19:25,277 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-11-06 20:19:25,277 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-11-06 20:19:25,277 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-11-06 20:19:25,277 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-11-06 20:19:25,277 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-11-06 20:19:25,278 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-11-06 20:19:25,278 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-11-06 20:19:25,278 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-11-06 20:19:25,278 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-11-06 20:19:25,278 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-11-06 20:19:25,279 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-11-06 20:19:25,279 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-11-06 20:19:25,279 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-11-06 20:19:25,354 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-11-06 20:19:25,368 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-11-06 20:19:25,372 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-11-06 20:19:25,373 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-11-06 20:19:25,374 INFO  L276        PluginConnector]: CDTParser initialized
[2018-11-06 20:19:25,374 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label56_true-unreach-call.c
[2018-11-06 20:19:25,458 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11cdba0f8/f1a724346866444c8296f97aae7ea681/FLAG441af6f64
[2018-11-06 20:19:26,341 INFO  L298              CDTParser]: Found 1 translation units.
[2018-11-06 20:19:26,343 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label56_true-unreach-call.c
[2018-11-06 20:19:26,392 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11cdba0f8/f1a724346866444c8296f97aae7ea681/FLAG441af6f64
[2018-11-06 20:19:26,412 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11cdba0f8/f1a724346866444c8296f97aae7ea681
[2018-11-06 20:19:26,424 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-11-06 20:19:26,426 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-11-06 20:19:26,427 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-11-06 20:19:26,427 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-11-06 20:19:26,431 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-11-06 20:19:26,432 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:19:26" (1/1) ...
[2018-11-06 20:19:26,436 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca78f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:26, skipping insertion in model container
[2018-11-06 20:19:26,436 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:19:26" (1/1) ...
[2018-11-06 20:19:26,447 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-11-06 20:19:26,716 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-11-06 20:19:28,941 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-11-06 20:19:28,946 INFO  L189         MainTranslator]: Completed pre-run
[2018-11-06 20:19:30,120 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-11-06 20:19:30,202 INFO  L193         MainTranslator]: Completed translation
[2018-11-06 20:19:30,203 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30 WrapperNode
[2018-11-06 20:19:30,203 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-11-06 20:19:30,205 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-11-06 20:19:30,205 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-11-06 20:19:30,206 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-11-06 20:19:30,217 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30" (1/1) ...
[2018-11-06 20:19:30,718 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30" (1/1) ...
[2018-11-06 20:19:31,011 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-11-06 20:19:31,012 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-11-06 20:19:31,012 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-11-06 20:19:31,012 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-11-06 20:19:31,025 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30" (1/1) ...
[2018-11-06 20:19:31,026 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30" (1/1) ...
[2018-11-06 20:19:31,119 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30" (1/1) ...
[2018-11-06 20:19:31,119 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30" (1/1) ...
[2018-11-06 20:19:31,290 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30" (1/1) ...
[2018-11-06 20:19:31,364 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30" (1/1) ...
[2018-11-06 20:19:31,431 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30" (1/1) ...
[2018-11-06 20:19:31,486 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-11-06 20:19:31,487 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-11-06 20:19:31,487 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-11-06 20:19:31,487 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-11-06 20:19:31,489 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-11-06 20:19:31,566 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-11-06 20:19:31,566 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-11-06 20:19:31,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-11-06 20:19:47,642 INFO  L276             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-11-06 20:19:47,643 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:19:47 BoogieIcfgContainer
[2018-11-06 20:19:47,643 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-11-06 20:19:47,644 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-11-06 20:19:47,644 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-11-06 20:19:47,647 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-11-06 20:19:47,648 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:19:26" (1/3) ...
[2018-11-06 20:19:47,648 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4214cee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:19:47, skipping insertion in model container
[2018-11-06 20:19:47,649 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:30" (2/3) ...
[2018-11-06 20:19:47,649 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4214cee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:19:47, skipping insertion in model container
[2018-11-06 20:19:47,649 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:19:47" (3/3) ...
[2018-11-06 20:19:47,651 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label56_true-unreach-call.c
[2018-11-06 20:19:47,661 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-11-06 20:19:47,671 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-11-06 20:19:47,687 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-11-06 20:19:47,739 INFO  L135   ementStrategyFactory]: Using default assertion order modulation
[2018-11-06 20:19:47,739 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-11-06 20:19:47,740 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-11-06 20:19:47,740 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-11-06 20:19:47,740 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-11-06 20:19:47,740 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-11-06 20:19:47,740 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-11-06 20:19:47,740 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-11-06 20:19:47,740 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-11-06 20:19:47,796 INFO  L276                IsEmpty]: Start isEmpty. Operand 2186 states.
[2018-11-06 20:19:47,926 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1675
[2018-11-06 20:19:47,926 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:19:47,929 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:19:47,932 INFO  L423      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:19:47,938 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:19:47,939 INFO  L82        PathProgramCache]: Analyzing trace with hash -1979438854, now seen corresponding path program 1 times
[2018-11-06 20:19:47,941 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:19:47,942 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:19:48,000 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:19:48,000 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:19:48,000 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:19:48,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:19:52,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-06 20:19:52,924 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:19:52,924 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-11-06 20:19:52,932 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:19:52,945 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:19:52,946 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:19:52,948 INFO  L87              Difference]: Start difference. First operand 2186 states. Second operand 4 states.
[2018-11-06 20:20:15,080 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:20:15,081 INFO  L93              Difference]: Finished difference Result 7907 states and 15105 transitions.
[2018-11-06 20:20:15,082 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-06 20:20:15,083 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1674
[2018-11-06 20:20:15,092 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:20:15,169 INFO  L225             Difference]: With dead ends: 7907
[2018-11-06 20:20:15,169 INFO  L226             Difference]: Without dead ends: 5714
[2018-11-06 20:20:15,180 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:20:15,203 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5714 states.
[2018-11-06 20:20:15,389 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5714 to 5695.
[2018-11-06 20:20:15,391 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5695 states.
[2018-11-06 20:20:15,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5695 states to 5695 states and 9459 transitions.
[2018-11-06 20:20:15,415 INFO  L78                 Accepts]: Start accepts. Automaton has 5695 states and 9459 transitions. Word has length 1674
[2018-11-06 20:20:15,421 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:20:15,421 INFO  L480      AbstractCegarLoop]: Abstraction has 5695 states and 9459 transitions.
[2018-11-06 20:20:15,422 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-06 20:20:15,422 INFO  L276                IsEmpty]: Start isEmpty. Operand 5695 states and 9459 transitions.
[2018-11-06 20:20:15,703 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1694
[2018-11-06 20:20:15,704 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:20:15,706 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:20:15,706 INFO  L423      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:20:15,706 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:20:15,708 INFO  L82        PathProgramCache]: Analyzing trace with hash -322947892, now seen corresponding path program 1 times
[2018-11-06 20:20:15,709 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:20:15,709 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:20:15,710 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:20:15,711 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:20:15,711 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:20:15,959 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:20:17,796 WARN  L179               SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 11
[2018-11-06 20:20:18,051 WARN  L179               SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 23
[2018-11-06 20:20:18,420 WARN  L179               SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 34
[2018-11-06 20:20:18,658 WARN  L179               SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35
[2018-11-06 20:20:18,950 WARN  L179               SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35
[2018-11-06 20:20:19,192 WARN  L179               SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34
[2018-11-06 20:20:19,569 WARN  L179               SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31
[2018-11-06 20:20:31,435 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-06 20:20:31,435 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:20:31,435 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2018-11-06 20:20:31,439 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 15 states
[2018-11-06 20:20:31,439 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2018-11-06 20:20:31,440 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210
[2018-11-06 20:20:31,440 INFO  L87              Difference]: Start difference. First operand 5695 states and 9459 transitions. Second operand 15 states.
[2018-11-06 20:21:05,303 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:21:05,303 INFO  L93              Difference]: Finished difference Result 18397 states and 31393 transitions.
[2018-11-06 20:21:05,304 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2018-11-06 20:21:05,304 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 1693
[2018-11-06 20:21:05,305 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:21:05,364 INFO  L225             Difference]: With dead ends: 18397
[2018-11-06 20:21:05,364 INFO  L226             Difference]: Without dead ends: 12704
[2018-11-06 20:21:05,374 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=347, Invalid=709, Unknown=0, NotChecked=0, Total=1056
[2018-11-06 20:21:05,385 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12704 states.
[2018-11-06 20:21:05,586 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12704 to 11747.
[2018-11-06 20:21:05,587 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11747 states.
[2018-11-06 20:21:05,609 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11747 states to 11747 states and 16187 transitions.
[2018-11-06 20:21:05,609 INFO  L78                 Accepts]: Start accepts. Automaton has 11747 states and 16187 transitions. Word has length 1693
[2018-11-06 20:21:05,611 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:21:05,611 INFO  L480      AbstractCegarLoop]: Abstraction has 11747 states and 16187 transitions.
[2018-11-06 20:21:05,611 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2018-11-06 20:21:05,612 INFO  L276                IsEmpty]: Start isEmpty. Operand 11747 states and 16187 transitions.
[2018-11-06 20:21:05,660 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1821
[2018-11-06 20:21:05,660 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:21:05,662 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:21:05,662 INFO  L423      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:21:05,662 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:21:05,663 INFO  L82        PathProgramCache]: Analyzing trace with hash 859195732, now seen corresponding path program 1 times
[2018-11-06 20:21:05,663 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:21:05,663 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:21:05,664 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:05,665 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:21:05,665 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:05,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:21:07,685 INFO  L134       CoverageAnalysis]: Checked inductivity of 231 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked.
[2018-11-06 20:21:07,685 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:21:07,686 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-11-06 20:21:07,688 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:21:07,688 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:21:07,688 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:21:07,689 INFO  L87              Difference]: Start difference. First operand 11747 states and 16187 transitions. Second operand 4 states.
[2018-11-06 20:21:21,574 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:21:21,574 INFO  L93              Difference]: Finished difference Result 43946 states and 61314 transitions.
[2018-11-06 20:21:21,576 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-06 20:21:21,576 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1820
[2018-11-06 20:21:21,576 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:21:21,655 INFO  L225             Difference]: With dead ends: 43946
[2018-11-06 20:21:21,656 INFO  L226             Difference]: Without dead ends: 32201
[2018-11-06 20:21:21,670 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:21:21,696 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32201 states.
[2018-11-06 20:21:22,073 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32201 to 32191.
[2018-11-06 20:21:22,074 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32191 states.
[2018-11-06 20:21:22,117 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32191 states to 32191 states and 41081 transitions.
[2018-11-06 20:21:22,117 INFO  L78                 Accepts]: Start accepts. Automaton has 32191 states and 41081 transitions. Word has length 1820
[2018-11-06 20:21:22,118 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:21:22,118 INFO  L480      AbstractCegarLoop]: Abstraction has 32191 states and 41081 transitions.
[2018-11-06 20:21:22,118 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-06 20:21:22,118 INFO  L276                IsEmpty]: Start isEmpty. Operand 32191 states and 41081 transitions.
[2018-11-06 20:21:22,210 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1851
[2018-11-06 20:21:22,210 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:21:22,212 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:21:22,212 INFO  L423      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:21:22,213 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:21:22,213 INFO  L82        PathProgramCache]: Analyzing trace with hash 713243680, now seen corresponding path program 1 times
[2018-11-06 20:21:22,213 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:21:22,214 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:21:22,215 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:22,215 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:21:22,215 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:22,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:21:23,974 INFO  L134       CoverageAnalysis]: Checked inductivity of 239 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked.
[2018-11-06 20:21:23,975 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:21:23,975 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-11-06 20:21:23,977 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-11-06 20:21:23,977 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-11-06 20:21:23,977 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-06 20:21:23,978 INFO  L87              Difference]: Start difference. First operand 32191 states and 41081 transitions. Second operand 3 states.
[2018-11-06 20:21:33,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:21:33,443 INFO  L93              Difference]: Finished difference Result 94964 states and 121445 transitions.
[2018-11-06 20:21:33,443 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-11-06 20:21:33,443 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1850
[2018-11-06 20:21:33,443 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:21:33,558 INFO  L225             Difference]: With dead ends: 94964
[2018-11-06 20:21:33,558 INFO  L226             Difference]: Without dead ends: 62775
[2018-11-06 20:21:33,598 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-06 20:21:33,646 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 62775 states.
[2018-11-06 20:21:34,270 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 62775 to 62773.
[2018-11-06 20:21:34,271 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 62773 states.
[2018-11-06 20:21:34,344 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62773 states to 62773 states and 75549 transitions.
[2018-11-06 20:21:34,344 INFO  L78                 Accepts]: Start accepts. Automaton has 62773 states and 75549 transitions. Word has length 1850
[2018-11-06 20:21:34,345 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:21:34,345 INFO  L480      AbstractCegarLoop]: Abstraction has 62773 states and 75549 transitions.
[2018-11-06 20:21:34,345 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-11-06 20:21:34,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 62773 states and 75549 transitions.
[2018-11-06 20:21:34,441 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2045
[2018-11-06 20:21:34,441 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:21:34,443 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:21:34,443 INFO  L423      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:21:34,443 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:21:34,444 INFO  L82        PathProgramCache]: Analyzing trace with hash -922937479, now seen corresponding path program 1 times
[2018-11-06 20:21:34,444 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:21:34,444 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:21:34,445 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:34,445 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:21:34,446 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:34,573 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:21:37,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 581 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2018-11-06 20:21:37,425 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:21:37,425 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-11-06 20:21:37,427 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:21:37,427 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:21:37,427 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:21:37,427 INFO  L87              Difference]: Start difference. First operand 62773 states and 75549 transitions. Second operand 4 states.
[2018-11-06 20:21:50,348 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:21:50,349 INFO  L93              Difference]: Finished difference Result 127248 states and 153967 transitions.
[2018-11-06 20:21:50,349 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-06 20:21:50,349 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2044
[2018-11-06 20:21:50,349 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:21:50,456 INFO  L225             Difference]: With dead ends: 127248
[2018-11-06 20:21:50,456 INFO  L226             Difference]: Without dead ends: 53815
[2018-11-06 20:21:50,499 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:21:50,537 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53815 states.
[2018-11-06 20:21:51,007 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53815 to 53805.
[2018-11-06 20:21:51,007 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 53805 states.
[2018-11-06 20:21:51,068 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53805 states to 53805 states and 58240 transitions.
[2018-11-06 20:21:51,068 INFO  L78                 Accepts]: Start accepts. Automaton has 53805 states and 58240 transitions. Word has length 2044
[2018-11-06 20:21:51,069 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:21:51,069 INFO  L480      AbstractCegarLoop]: Abstraction has 53805 states and 58240 transitions.
[2018-11-06 20:21:51,069 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-06 20:21:51,069 INFO  L276                IsEmpty]: Start isEmpty. Operand 53805 states and 58240 transitions.
[2018-11-06 20:21:51,154 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2118
[2018-11-06 20:21:51,155 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:21:51,157 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:21:51,157 INFO  L423      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:21:51,157 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:21:51,158 INFO  L82        PathProgramCache]: Analyzing trace with hash 744210386, now seen corresponding path program 1 times
[2018-11-06 20:21:51,158 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:21:51,158 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:21:51,159 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:51,159 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:21:51,160 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:51,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:21:52,344 WARN  L179               SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 11
[2018-11-06 20:21:52,604 WARN  L179               SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 23
[2018-11-06 20:21:53,232 WARN  L179               SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24
[2018-11-06 20:21:59,797 INFO  L134       CoverageAnalysis]: Checked inductivity of 623 backedges. 587 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2018-11-06 20:21:59,797 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:21:59,797 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2018-11-06 20:21:59,799 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-11-06 20:21:59,799 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-11-06 20:21:59,799 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2018-11-06 20:21:59,799 INFO  L87              Difference]: Start difference. First operand 53805 states and 58240 transitions. Second operand 9 states.
[2018-11-06 20:22:15,124 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:22:15,124 INFO  L93              Difference]: Finished difference Result 110656 states and 119574 transitions.
[2018-11-06 20:22:15,124 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-11-06 20:22:15,125 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 2117
[2018-11-06 20:22:15,125 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:22:15,181 INFO  L225             Difference]: With dead ends: 110656
[2018-11-06 20:22:15,181 INFO  L226             Difference]: Without dead ends: 56853
[2018-11-06 20:22:15,211 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132
[2018-11-06 20:22:15,253 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56853 states.
[2018-11-06 20:22:15,717 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56853 to 56221.
[2018-11-06 20:22:15,718 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 56221 states.
[2018-11-06 20:22:15,771 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56221 states to 56221 states and 60661 transitions.
[2018-11-06 20:22:15,772 INFO  L78                 Accepts]: Start accepts. Automaton has 56221 states and 60661 transitions. Word has length 2117
[2018-11-06 20:22:15,772 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:22:15,772 INFO  L480      AbstractCegarLoop]: Abstraction has 56221 states and 60661 transitions.
[2018-11-06 20:22:15,773 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-11-06 20:22:15,773 INFO  L276                IsEmpty]: Start isEmpty. Operand 56221 states and 60661 transitions.
[2018-11-06 20:22:15,850 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2215
[2018-11-06 20:22:15,851 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:22:15,853 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:22:15,853 INFO  L423      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:22:15,853 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:22:15,854 INFO  L82        PathProgramCache]: Analyzing trace with hash 1500401105, now seen corresponding path program 1 times
[2018-11-06 20:22:15,854 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:22:15,854 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:22:15,855 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:22:15,855 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:22:15,855 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:22:15,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:22:16,986 WARN  L179               SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 16
[2018-11-06 20:22:17,181 WARN  L179               SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 22
[2018-11-06 20:22:20,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 867 backedges. 651 proven. 105 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked.
[2018-11-06 20:22:20,889 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-11-06 20:22:20,889 INFO  L225   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-11-06 20:22:20,998 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:22:21,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:22:21,639 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-11-06 20:22:24,189 INFO  L134       CoverageAnalysis]: Checked inductivity of 867 backedges. 756 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked.
[2018-11-06 20:22:24,211 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-11-06 20:22:24,212 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9
[2018-11-06 20:22:24,220 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-11-06 20:22:24,220 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-11-06 20:22:24,220 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2018-11-06 20:22:24,220 INFO  L87              Difference]: Start difference. First operand 56221 states and 60661 transitions. Second operand 9 states.
[2018-11-06 20:23:01,761 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:23:01,762 INFO  L93              Difference]: Finished difference Result 140882 states and 152197 transitions.
[2018-11-06 20:23:01,769 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2018-11-06 20:23:01,769 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 2214
[2018-11-06 20:23:01,770 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:23:01,913 INFO  L225             Difference]: With dead ends: 140882
[2018-11-06 20:23:01,913 INFO  L226             Difference]: Without dead ends: 84663
[2018-11-06 20:23:01,949 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 2248 GetRequests, 2227 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506
[2018-11-06 20:23:02,040 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84663 states.
[2018-11-06 20:23:03,429 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84663 to 74913.
[2018-11-06 20:23:03,429 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 74913 states.
[2018-11-06 20:23:03,523 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 74913 states to 74913 states and 79896 transitions.
[2018-11-06 20:23:03,524 INFO  L78                 Accepts]: Start accepts. Automaton has 74913 states and 79896 transitions. Word has length 2214
[2018-11-06 20:23:03,525 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:23:03,525 INFO  L480      AbstractCegarLoop]: Abstraction has 74913 states and 79896 transitions.
[2018-11-06 20:23:03,525 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-11-06 20:23:03,526 INFO  L276                IsEmpty]: Start isEmpty. Operand 74913 states and 79896 transitions.
[2018-11-06 20:23:03,719 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2265
[2018-11-06 20:23:03,720 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:23:03,721 INFO  L375         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2018-11-06 20:23:03,722 INFO  L423      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:23:03,722 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:23:03,724 INFO  L82        PathProgramCache]: Analyzing trace with hash 286069166, now seen corresponding path program 1 times
[2018-11-06 20:23:03,724 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:23:03,724 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:23:03,726 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:23:03,726 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:23:03,726 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:23:03,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:23:07,733 INFO  L134       CoverageAnalysis]: Checked inductivity of 1349 backedges. 816 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked.
[2018-11-06 20:23:07,733 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:23:07,734 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-11-06 20:23:07,735 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-11-06 20:23:07,736 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-11-06 20:23:07,736 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-06 20:23:07,736 INFO  L87              Difference]: Start difference. First operand 74913 states and 79896 transitions. Second operand 3 states.
Received shutdown request...
[2018-11-06 20:23:09,624 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-11-06 20:23:09,624 WARN  L549      AbstractCegarLoop]: Verification canceled
[2018-11-06 20:23:09,631 WARN  L205   ceAbstractionStarter]: Timeout
[2018-11-06 20:23:09,631 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:23:09 BoogieIcfgContainer
[2018-11-06 20:23:09,631 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-11-06 20:23:09,632 INFO  L168              Benchmark]: Toolchain (without parser) took 223207.44 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 581.1 MB. Max. memory is 7.1 GB.
[2018-11-06 20:23:09,633 INFO  L168              Benchmark]: CDTParser took 1.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-11-06 20:23:09,634 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 3777.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
[2018-11-06 20:23:09,635 INFO  L168              Benchmark]: Boogie Procedure Inliner took 806.13 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 866.6 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB.
[2018-11-06 20:23:09,636 INFO  L168              Benchmark]: Boogie Preprocessor took 475.06 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 70.1 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB.
[2018-11-06 20:23:09,636 INFO  L168              Benchmark]: RCFGBuilder took 16156.04 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 312.0 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -216.0 MB). Peak memory consumption was 804.4 MB. Max. memory is 7.1 GB.
[2018-11-06 20:23:09,637 INFO  L168              Benchmark]: TraceAbstraction took 201987.58 ms. Allocated memory was 2.7 GB in the beginning and 4.1 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 3.4 GB in the end (delta: -998.8 MB). Peak memory consumption was 403.2 MB. Max. memory is 7.1 GB.
[2018-11-06 20:23:09,643 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 1.73 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 3777.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 806.13 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 866.6 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 475.06 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 70.1 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 16156.04 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 312.0 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -216.0 MB). Peak memory consumption was 804.4 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 201987.58 ms. Allocated memory was 2.7 GB in the beginning and 4.1 GB in the end (delta: 1.4 GB). Free memory was 2.4 GB in the beginning and 3.4 GB in the end (delta: -998.8 MB). Peak memory consumption was 403.2 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 11063]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 11063). Cancelled while BasicCegarLoop was constructing difference of abstraction (74913states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (12403 states constructedinput type IntersectNwa).
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 2186 locations, 1 error locations. TIMEOUT Result, 201.9s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 147.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 13690 SDtfs, 47812 SDslu, 7437 SDs, 0 SdLazy, 113804 SolverSat, 17394 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 118.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2307 GetRequests, 2235 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74913occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 11380 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 17890 NumberOfCodeBlocks, 17890 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 17881 ConstructedInterpolants, 0 QuantifiedInterpolants, 135636487 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2401 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 4670/4775 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown